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使用可再生的酸移植生物石墨烯选择性回收微量Ga(III)

Luwei Cheng¹, Qunshan Wei², Mingyue Li¹

¹School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.

Journal of environmental management

|February 19, 2026

概括

研究人员从玉米茎中开发了一种新的生物石墨烯材料,从工业废物中选择性地回收微量 (Ga). 这种可持续的低溶剂方法实现了高加吸附和选择性,为关键原材料采购提供了实际解决方案.

科学领域:

材料科学材料科学材料科学
环境化学环境化学
化学工程是化学工程的重要组成部分.

背景情况:

从工业废物中回收 (Ga) 对可持续的供应链至关重要.
由于有机溶剂,传统方法面临选择性和环境影响的挑战.
痕迹Ga通常在复杂的矩阵中发现,其度高的Al3+,Fe3+和Ca2+.

研究的目的:

开发一种选择性和可持续的方法,从低度废物流中回收微量.
将农业废物再循环加工成用于金属离子吸附的功能性材料.
为了阐明吸附和选择性的机制.

主要方法:

将玉米升级为生物石墨烯支架.
通过环氧化和移植 (GA-EPI-OCS) 用酸 (GA) 功能化脚手架.
吸附实验,平衡和运动建模,多元件矩阵的选择性验证,光谱表征 (FTIR/XPS) 和理论模拟 (MD/DFT).

主要成果:

使用GA-EPI-OCS材料,在20 mg·L-1时达到~97%的Ga吸附.
证明了高选择性对Ga超过联合离子 (Al3+,Fe3+,Ca2+),分布系数1-2数量级更高.
确定了恢复机制为内部球的Ga-O化和协调诱导的电子杂交.

结论:

开发的GA-EPI-OCS材料为回收提供了一个实用和可持续的途径.
这种低溶剂,可再生的工艺适合酸性液.
这种方法有助于确保从复杂的工业废物中获得的可持续供应.

关键词:

生物石墨烯是一种生物石墨烯.玉米的茎,就是玉米的茎.酸接种酸接种内部球体 GaO 合.选择性Ga(III) 吸附方式

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